Use ResourceMapper in ensureWelcomePage

Author: rubensworks

lib/server-config.js

@@ -40,9 +40,8 @@ function ensureDirCopyExists (fromDir, toDir) {
  * @param argv {Object} Express.js app object
  */
 async function ensureWelcomePage (argv) {
-  const { multiuser, templates, server, host } = argv
-  const rootDir = path.resolve(argv.root)
-  const serverRootDir = multiuser ? path.join(rootDir, argv.host.hostname) : rootDir
+  const { resourceMapper, templates, server, host } = argv
+  const serverRootDir = resourceMapper.getBasePath(host.hostname)
   const existingIndexPage = path.join(serverRootDir, 'index.html')
   const packageData = require('../package.json')